Wow! At first read it sounds like you have a bunch of things going on, and I am not sure that they are all related.
In terms of your traction control lights this may be the result of uneven tire wear between the front, and rear tires. 4X4 systems have never been happy with more tread on one end of the truck, or the other. It just causes wear on drive-train parts. I could see one of these modern computerized systems going nuts for the same reason. So if the front, or rear tires are more worn than their friends at the opposite end of the truck, it may be time for 4 new tires. I have always purchased tires in sets of two, but I just do not think these modern comput-o-mobiles will let us get away with that anymore. So rotate regularly is my new motto. Then buy 4 tires. (ick I hate to drop that much money at once!)
In terms of the horn, and cruise buttons it could be the clock spring controller, (thank your Ralph Nader, and your air bags.) Sometimes it can be just a matter of contact corrosion.
Disconnect the battery, and let the truck sit for 30 minutes to de-energize those worthless airbags. Then pull the steering wheel. On the back of the wheel you should see some little metal contact fingers. Carefully clean them with a pencil eraser, and then clean their mating surface in the column. Use caution to not distort, or deform the fingers in any way.Replace the wheel, and reconnect the battery. This may sort out that horn, and cruise issue for you.
_________________ Until the next dimension, Admiral "Coluch" ------------------------------------------ Lando Liberty 2011 Kk
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